EP 0647469 A3 19960403 - Imidazoline derived amphoacetates surfactants of higher purity, and processes for their preparation.
Title (en)
Imidazoline derived amphoacetates surfactants of higher purity, and processes for their preparation.
Title (de)
Imidazolin abgeleitete Amphoacetate-Tenside von höherer Reinheit, sowie Verfahren zur ihrer Herstellung.
Title (fr)
Amphoacétates tensio-actifs de plus grande pureté, dérivés de l'imidazoline, et leurs procédés de préparation.
Publication
Application
Priority
US 13509493 A 19931012
Abstract (en)
[origin: US5744063A] Imadazoline-based amphoacetates of higher purity, containing essentially negligible amounts of unalkylated amido amines, lower amounts of glycolic acid salts and monochloroacetate salts, superior to currently available conventional amphoacetates, are provided. This is demonstrated by their improved surface-active properties. Lower inherent irritation properties may be expected due to improved purity. The higher purity amphoacetates can be obtained via processes utilizing precise pH control during the reaction of imidazoline, or its open-chain derivatives, with alkylating agents, e.g. sodium monochloroacetate. The pH can be controlled by adding the base slowly or automatically in response to a pH metering device to maintain a constant pH, or by a series of staged additions which are calculated to maintain pH within a stated range. The reaction may also be carried out by conducting the initial hydrolysis of the imidazoline ring structure, followed by alkylation. These higher-purity amphoacetates contain essentially fully alkylated products and lower amounts of glycolic acid derivatives, even though a ratio of SMCA to substituted imidazoline, or its open-ring derivative, of less than 1.5:1.0 and close to 1.0:1.0 is used.
IPC 1-7
IPC 8 full level
A61K 8/00 (2006.01); A61K 8/40 (2006.01); A61K 8/44 (2006.01); A61K 8/49 (2006.01); A61Q 5/00 (2006.01); A61Q 5/02 (2006.01); A61Q 19/10 (2006.01); C07C 233/36 (2006.01); C07C 233/38 (2006.01); C07D 233/02 (2006.01); C07D 233/04 (2006.01); C07D 233/14 (2006.01); C09K 23/00 (2022.01); C09K 23/16 (2022.01); C09K 23/22 (2022.01); C09K 23/28 (2022.01); C11D 1/40 (2006.01); C11D 1/88 (2006.01); C11D 3/43 (2006.01); C11D 7/32 (2006.01); C11D 7/50 (2006.01)
CPC (source: EP KR US)
A61K 8/442 (2013.01 - EP US); A61K 8/4946 (2013.01 - EP US); A61Q 5/02 (2013.01 - EP US); A61Q 19/10 (2013.01 - EP US); C07C 233/36 (2013.01 - EP US); C07C 233/38 (2013.01 - EP US); C07D 233/02 (2013.01 - EP US); C09K 23/017 (2022.01 - EP US); C09K 23/28 (2022.01 - EP KR US); C11D 1/10 (2013.01 - KR); C11D 1/40 (2013.01 - EP US); C11D 1/88 (2013.01 - EP US); C11D 3/43 (2013.01 - EP US); C11D 7/3209 (2013.01 - EP US); C11D 7/3218 (2013.01 - EP US); C11D 7/5013 (2013.01 - EP US); C11D 7/5018 (2013.01 - EP US); C11D 7/5022 (2013.01 - EP US); Y10S 516/915 (2013.01 - EP US)
Citation (search report)
- [PX] DE 4307709 A1 19940915 - REWO CHEMISCHE WERKE GMBH [DE]
- [X] GB 930296 A 19630703 - RUTH A WALKER
- [DX] US 4269730 A 19810526 - WECHSLER JOSEPH R, et al
- [PX] DE 4240154 A1 19940601 - HENKEL KGAA [DE]
- [X] DE 3639752 A1 19870527 - KAO CORP [JP]
- [PX] WO 9413621 A1 19940623 - RHONE POULENC CHIMIE [FR], et al
- [X] DE 2725780 A1 19781214 - MIRANOL CHEMICAL CO
- [X] EP 0269940 A2 19880608 - KAO CORP [JP]
- [X] EP 0373491 A1 19900620 - HENKEL KGAA [DE]
- [A] EP 0269939 A2 19880608 - KAO CORP [JP]
- [A] EP 0040346 A1 19811125 - HENKEL KGAA [DE]
- [A] DE 3641871 A1 19880609 - HENKEL KGAA [DE]
- [A] WO 9210481 A1 19920625 - HENKEL KGAA [DE]
Designated contracting state (EPC)
AT BE CH DE DK ES FR GB GR IE IT LI LU NL PT SE
DOCDB simple family (publication)
US 5744063 A 19980428; AT E265884 T1 20040515; AT E466653 T1 20100515; AU 680933 B2 19970814; AU 7447194 A 19950504; BR 9404065 A 19951017; CA 2132289 A1 19950413; CN 1046212 C 19991110; CN 1104929 A 19950712; DE 69433755 D1 20040609; DE 69433755 T2 20050407; DE 69433755 T3 20100923; DE 69435293 D1 20100617; EP 0647469 A2 19950412; EP 0647469 A3 19960403; EP 0647469 B1 20040506; EP 0647469 B2 20100505; EP 1449577 A1 20040825; EP 1449577 B1 20100505; ES 2215993 T3 20041016; ES 2215993 T5 20100907; ES 2341244 T3 20100617; JP 2935641 B2 19990816; JP H07179888 A 19950718; KR 950011601 A 19950515; US 5952291 A 19990914; US 6057282 A 20000502
DOCDB simple family (application)
US 80131397 A 19970218; AT 04075976 T 19941005; AT 94402226 T 19941005; AU 7447194 A 19941006; BR 9404065 A 19941011; CA 2132289 A 19940916; CN 94117119 A 19941011; DE 69433755 T 19941005; DE 69435293 T 19941005; EP 04075976 A 19941005; EP 94402226 A 19941005; ES 04075976 T 19941005; ES 94402226 T 19941005; JP 24542494 A 19941011; KR 19940025834 A 19941010; US 37884199 A 19990823; US 5536898 A 19980406